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A. J. PRESCOT'IXOF CAT-AWISSA, PENNSYLVANIA.

Lette/rs Pate/nt No. 96,035, dted October` 19, 1869.

IMPROVED BEAMER.

The Schedule referred to in'these Letten Patent and makngpart of the same- To all whom it may concern:

Be it known that I, A. J. Piz-Escorts, of Uatawissa, in the county of Columbia,iand infthel State of -Penn- Sylvania, have inventedceltain new and useful Imf preveinents in Beamers; and do hereby declare that the following is a full, clear, andfexact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The'nature of my invention consists in the construction of an outside reamer, provided with cutting-parts and blank `or smooth parts', and is so constructed that it will not chatter 'while ati work, and also leaves they work smooth.

In orderjo enable others skilled inthe art to whichl my invention appertains to make and use the; saine, I will now proceed to describe its construction and operation, referring to the annexed drawings, in which- Figure 1 is aside elevation of the reamer, and Figure 2 is `an end view of the same. A represents the hollow headof the reamer, which is secured to the end of the handle B, the pin The end of the hollow head A, upon the inside, is balled or .tapered out, and is provided with one or more cutting-parts C G, and one or more bla/nk or smooth parts D D, which serve to steady the reainer and keep it from chattering while .t work; also, smooth the work, and keep the dirt and chips oi the same.

The open spaces 1, 2, 3, 4, are for the purpose of breaking the lineof centre to allow the reamer to out, also to allow the chips and dirt to escape, and to destroy friction while the reamer is revolving.

The edges G G of the blank or smooth parts D D are cutting-edges, to true up any imperfection there may be from the cutting-sides C C.

The hollow in the head H is for the purpose of allowing the work to run in, if required, while the holes i i in the head allow any dirt or chips .that might get inl there to escape.

Having thus fully described my invention,

`What I claim as new, and desire tov secure by Letters Patent., is`

An outside ball orl taper-reamer, having a hollow head, H, one or more cutting-sides O, one or more blank or smooth sides D, with cutting-edges G, open spaces 1,*2, 3, 4, and holes it', all substantially as and for the purposes herein set forth.

In testimony that IA claim the foregoing, I have hereunto set my 4hand, this 30th day of August, 1869. Witnesses: A. J. PRESGOTT.

J. S. MONROE, 

